CN202424933U - Wireless audio and video signal transmission device and television - Google Patents
Wireless audio and video signal transmission device and television Download PDFInfo
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- CN202424933U CN202424933U CN2011205519435U CN201120551943U CN202424933U CN 202424933 U CN202424933 U CN 202424933U CN 2011205519435 U CN2011205519435 U CN 2011205519435U CN 201120551943 U CN201120551943 U CN 201120551943U CN 202424933 U CN202424933 U CN 202424933U
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Abstract
The utility model provides a wireless audio and video signal transmission device which comprises an audio and video signal transmission port, an audio and video signal switching unit and a decoding unit which are sequentially connected with one another, a control unit and a first wireless transmission unit, wherein the control unit is connected with the audio and video signal switching unit and used for controlling the audio and video signal switching unit to transmit a signal of a selected port of the audio and video signal transmission port to the decoding unit according to a received instruction, and the first wireless transmission unit is connected with the decoding unit and the control unit and used for wirelessly outputting an audio and video signal decoded by the decoding unit. The utility model also provides a television which comprises a television main chip, a second wireless transmission module for transmitting the wireless audio and video signal, a demodulation module for demodulating the audio and video signal, and a format conversion module which is connected with the demodulation module and used for encoding demodulated audios and videos and outputting the encoded audios and videos to the television main chip in a specific format. Therefore, the audio and video signal can be wirelessly transmitted.
Description
Technical field
The utility model relates to a kind of radio transmitting device and television set of audio-video signal.
Background technology
Along with popularizing of DTV; The audio-video signal type that TV can receive constantly increases; For example receive satellite TV signal, cable TV signal, ground digital television broadcast signal, HDTV signal and internet television signal etc.; Integrate if the above-mentioned audio-video signal of decoding needs to realize the hardware of above-mentioned functions, yet different hardware adopts distinct interface circuit, the standard of distinct interface and disunity.A plurality of signaling interfaces are arranged thus, cause cable various, user's complex connection and influence the clean and tidy of home environment.
The utility model content
In view of this, the purpose of the utility model is to provide a kind of radio transmitting device and television set of audio-video signal, is used to realize the wireless transmission of audio-video signal.
The radio transmitting device of audio-video signal comprises:
The audio-video signal transmit port 100, audio-video signal switch unit 101 and the decoding unit 103 that connect successively;
Also comprise:
First wireless transmission unit 20 is connected with control unit 102 with decoding unit 103, be used for the audio-video signal wireless transmit after decoding unit 103 decoding processing, and the said user's operational order of wireless receiving is transferred to control unit 102.
By last, realize the wireless transmission of audio-video signal.
One of optional, below said audio-video signal switch unit 101 comprises at least:
Audio signal handover module 1011, vision signal handover module 1012, audio-video signal mix road handover module 1013.
By last, realize audio frequency, video or the audio-video signal of the multiple form of transmission.
Preferable, said audio signal handover module 1011 is to comprise that model is the circuit of CD4052 chip; Said vision signal handover module 1012 is to comprise that model is the circuit of 5V330 chip; It is to comprise that model is the circuit of PS331 chip that said audio-video signal mixes road handover module 1013.
Optional, also comprise:
The synchronous commutation circuit of VGA is connected with vision signal handover module 1012, is used to control the synchronous switching of the field sync signal and the line synchronizing signal of VGA signal.
By last, realize the field sync signal of VGA signal and the synchronous switching of line synchronizing signal.
Preferable, the synchronous commutation circuit of said VGA is to comprise that model is the circuit of PI5V330 chip.
Said control unit 102 is to comprise that model is the circuit of P89LPC933 chip.
Said decoding unit 103 is to comprise that model is the circuit of ADV7441A chip.
Optional, said first wireless transmission unit 20 comprises:
First wireless transport module 202 is connected with modulation module 201, is used for the audio-video signal of being modulated with wireless transmit.
By last, realize the wireless output of vision signal.
Television set comprises television set master chip 40, also comprises:
Second wireless transport module 301 is used to receive modulated audio-video signal;
Format converting module is connected with demodulation module 301, is used for the audio/video coding of demodulation is handled, and exports television set master chip 40 to the specific format signal.
By last, realize the reception of audio-video signal.
Description of drawings
Fig. 1 is the utility model principle schematic;
Fig. 2 is the principle schematic of the radio transmitting device of audio-video signal;
Fig. 3 is the circuit theory diagrams of the radio transmitting device sound intermediate frequency signal handover module of audio-video signal;
Fig. 4 is the circuit theory diagrams of control unit in the radio transmitting device of audio-video signal;
Fig. 5 is the circuit theory diagrams of the synchronous commutation circuit of VGA in the radio transmitting device of audio-video signal;
Fig. 6 is the circuit theory diagrams of decoding unit in the radio transmitting device of audio-video signal;
(A) is the interface circuit schematic diagram of decoding unit in the radio transmitting device of audio-video signal among Fig. 7;
(B) is the expansion interface circuit schematic diagram of decoding unit in the radio transmitting device of audio-video signal among Fig. 7;
Fig. 8 is the circuit theory diagrams of interface circuit in the radio transmitting device of audio-video signal.
Embodiment
Shown the schematic diagram of the utility model like Fig. 1, wherein the radio transmitting device of audio-video signal comprises the audio-video signal processing unit 10 and first wireless transmission unit 20.
Said audio-video signal processing unit 10 is used for user-selected digital audio-video signal is switched; And the audio-video signal that is switched carried out decoding processing; As shown in Figure 2; Audio-video signal processing unit 10 comprises: audio-video signal switch unit 101, control unit 102 and decoding unit 103.Wherein, Said audio-video signal processing unit 10 carries out the reception of digital audio-video signal through audio-video signal transmit port 100, and audio-video signal transmit port 100 comprises: audio-video signal port (AV), YUV port (YUV), video and graphic matrix signal port (VGA), audio signal (AUDIO) and harmless audio-video signal port (HDMI).
Said audio-video signal switch unit 101 is connected with audio-video signal transmit port 100 with control unit 102 respectively, is used for according to the control signal that the control unit 102 that receives is exported the audio-video signal that is received through audio-video signal transmit port 100 being switched.Audio-video signal switch unit 101 comprises: audio signal handover module 1011, vision signal handover module 1012 mixes road handover module 1013 with audio-video signal.
Audio signal handover module 1011 is used for according to control signal AV audio signal, YUV audio signal and VGA audio signal being switched.Said audio signal handover module 1011 is through comprising that model is the circuit realization of CD4053 chip, and as shown in Figure 3, said audio signal is through AX, AY; BX, CX; BY, the input of CY pin are through AX/AY, BX/BY or the output of CX/CY pin.
Vision signal handover module 1012 is used for according to control signal yuv video signal and VGA vision signal being switched.Said vision signal handover module 1012 is through comprising that model is the circuit realization of 5V330 chip.
Audio-video signal mixes road handover module 1013 and is used for according to control signal the mixed road of the audio frequency and video signal that is received being switched, and for example HDMI signal handover module can carry out the input of two-way HDMI signal in the present embodiment.Said audio-video signal mixes road handover module 1013 through comprising that model is the circuit realization of PS331 chip.
Therefore need to prove that the physics video output interface of audio-video signal switch unit 101 is a two-way, in order to improve transmission of video signals efficient, the utility model is directly exported the AV vision signal and is not passed through vision signal handover module 1012.Be understood that, also can yuv video signal or VGA vision signal be directly exported.
In addition, also comprise with decoding unit 103 in the power circuit that is connected of ADV7441A chip, audio-video signal impedance matching circuit, clock circuit, the synchronous commutation circuit of VGA and interface circuit.
Wherein, The input of the synchronous commutation circuit of VGA is connected in 5V330 chip in the vision signal handover module 1012; The ADV7441A chip is connected in output and the decoding unit 103; Control end connects the P89LPC933 chip of control unit 102, is used for according to the synchronous switch-over control signal of VGA the field sync signal and the line synchronizing signal of VGA signal being switched synchronously.As shown in Figure 5; The synchronous commutation circuit of VGA realizes through the circuit that comprises the PI5V330 chip; This chip receives the field sync signal and the line synchronizing signal of VGA signal through video inputs mouth S 1A, S 1B, S2A, S2B; Receive the control signal that control unit 102 is sent through signal input end mouth IN, controlling filed synchronizing signal and line synchronizing signal are switched synchronously.
Interface circuit is connected between the civilian said modulation module 201 of decoding unit 103 and back, is used for the audio-video signal transmission.Its interface circuit is as shown in Figure 8.
First wireless transmission unit 20 is connected with audio-video signal processing unit 10, is used for that the audio-video signal of being decoded is modulated the back and exports with wireless.First wireless transmission unit 20 comprises the modulation module 201 and first wireless transport module 202.
Said modulation module 201 is connected with ADV7441A chip in the decoding unit 103, is used for the audio-video signal of being decoded is modulated.Thus the low frequency audio-video signal is combined to it on carrier wave through ovennodulation, so that carry out wireless transmission.
Said first wireless transport module 202 is connected with modulation module 201, is used for the audio-video signal of being modulated is exported with wireless.
Wherein, second wireless transport module 301 in second wireless transmission unit 30 mentioned of first wireless transport module 202 and hereinafter can adopt radiofrequency signal module, infrared signal module or wireless local area network communications module etc.For example, can select to comprise the circuit that model is TX5802, JL604R chip.
In addition, the utility model also provides the wireless signal reception television set that a kind of radio transmitting device of and above-mentioned audio-video signal is complementary.As shown in Figure 1, television set comprises successively second wireless transmission unit 30, television set master chip 40 and the display unit 50 that connects.
Second wireless transmission unit 30 is used for being coupled with first wireless transmission unit 20, receives the audio-video signal of wireless, exports after the demodulation, and second wireless transmission unit 30 comprises the demodulation module 302 and second wireless transport module 301.
Said second wireless transport module 301 is used to receive the audio-video signal of wireless.Demodulation module 302 is connected with second wireless transport module 301, is used for audio-video signal is carried out demodulation process.
In addition, said second wireless transport module 301 also is used to receive the instruction that controls that user control terminal (remote controller, PAD, mobile phone) sent, and controls instruction and export first wireless transmission unit 20 to said.Said control command comprises the selection instruction of audio-video signal.
In addition, television set also comprises format converting module (not shown), is connected with demodulation module 302, is used for the audio-video signal of demodulation is carried out decoding processing, converts the audio-video signal (like HDMI, DP) of specific format into.
Television set master chip 40 is connected with format converting module, is used for the audio-video signal of specific format is carried out decoding processing, generates display image signals (vision signal) and audio signal.Said television set master chip 40 receives above-mentioned TV signal, carries out buffer memory through memory module (not shown), after carrying out decoding processing, through sound, the vision signal output of audio-video signal output port with above-mentioned decoding.It is chip of BCM3551, PW1306 etc. that television set master chip 40 can adopt model.
Job step in the face of the radio transmitting device of audio-video signal and the television set that matches specifically describes down, and the user sends the selection instruction of audio-video signal through control terminal, selects to hope the type of TV reception.Second wireless transport module 301 in second wireless transmission unit 30 receives and saidly controls instruction and export first wireless transmission unit 20 to.First wireless transport module 202 in first wireless transmission unit 20 controls instruction and exports control unit 102 to said; The information transmission interface of P89LPC933 chip receives and controls instruction in the control unit 102; The P89LPC933 chip carries out audio-video signal according to user-selected control audio-video signal switch unit 101 and switches; The audio-video signal that is chosen is decoded by the ADV7441A chip in the decoding unit 103; After modulating by modulation module 201, through 202 outputs of first wireless transport module.For example; When the user selects the VGA signal; Control unit 102 is respectively to the synchronous commutation circuit output of audio signal handover module 1011, vision signal handover module 1012 and VGA control signal; Audio signal handover module 1011 switches to the audio-video signal of VGA with vision signal handover module 1012 according to control signal and exports; The synchronous commutation circuit of VGA carries out field sync signal according to the synchronous switch-over control signal of VGA and line synchronizing signal is switched synchronously, carries out the audio-video signal decoding by decoding unit 103.Second wireless transport module 301 in second wireless transmission unit 30 receives audio-video signal; Carry out demodulation by demodulation module 302; And carry out encoding process through format converting module; And output to TV master chip 40 with specific format signal (like HDMI, DP), and carry out decoding processing by television set master chip 40, broadcast by television display screen 50.
Preferable, first wireless transport module 202 in said first wireless transmission unit 20 also can with the coupling of user's control end, receive the selection instruction of the audio-video signal that user's control end sent, and export instruction to control unit 102.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (9)
1. the radio transmitting device of an audio-video signal comprises:
The audio-video signal transmit port (100), audio-video signal switch unit (101) and the decoding unit (103) that connect successively;
Control unit (102); Be connected with audio-video signal switch unit (101), the operational order control audio-video signal switch unit (101) that is used for sending according to the user's control end that receives transfers to decoding unit (103) with the audio-video signal of the selected port of audio-video signal transmit port (100);
It is characterized in that, also comprise:
First wireless transmission unit (20); Be connected with control unit (102) with decoding unit (103); Be used for the wireless output of audio-video signal after decoding unit (103) decoding processing, and the operational order that the said user's control end of reception sends is transferred to control unit (102).
One of 2. the radio transmitting device of audio-video signal according to claim 1 is characterized in that, below said audio-video signal switch unit (101) comprises at least:
Audio signal handover module (1011), vision signal handover module (1012), audio-video signal mix road handover module (1013).
3. the radio transmitting device of audio-video signal according to claim 2 is characterized in that, said audio signal handover module (1011) is to comprise that model is the circuit of CD4052 chip; Said vision signal handover module (1012) is to comprise that model is the circuit of 5V330 chip; It is to comprise that model is the circuit of PS331 chip that said audio-video signal mixes road handover module (1013).
4. the radio transmitting device of audio-video signal according to claim 2 is characterized in that, also comprises:
The synchronous commutation circuit of VGA, input are connected in vision signal handover module (1012), and output is connected with decoding unit (103), are used to control the synchronous switching of the field sync signal and the line synchronizing signal of VGA signal.
5. the radio transmitting device of audio-video signal according to claim 4 is characterized in that, the synchronous commutation circuit of said VGA is to comprise that model is the circuit of PI5V330 chip.
6. the radio transmitting device of audio-video signal according to claim 1 is characterized in that, said control unit (102) is to comprise that model is the circuit of P89LPC933 chip.
7. the radio transmitting device of audio-video signal according to claim 1 is characterized in that, said decoding unit (103) is to comprise that model is the circuit of ADV7441A chip.
8. the radio transmitting device of audio-video signal according to claim 1 is characterized in that, said first wireless transmission unit (20) comprising:
Modulation module (201) is connected with decoding unit (103), is used for the audio-video signal after the decoding processing is modulated to carrier wave;
First wireless transport module (202) is connected with modulation module (201), be used for the audio-video signal wireless transmit after modulating.
9. a television set comprises television set master chip (40), it is characterized in that, also comprises:
Second wireless transport module (302) is used to receive the audio-video signal that said first wireless transport module (202) is launched;
Demodulation module (301) is connected with second wireless transport module (302), is used for audio-video signal is carried out demodulation process;
Format converting module is connected with demodulation module (301), is used for the audio/video coding of demodulation is handled, and exports television set master chip (40) to the specific format signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205519435U CN202424933U (en) | 2011-12-26 | 2011-12-26 | Wireless audio and video signal transmission device and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205519435U CN202424933U (en) | 2011-12-26 | 2011-12-26 | Wireless audio and video signal transmission device and television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424933U true CN202424933U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205519435U Expired - Fee Related CN202424933U (en) | 2011-12-26 | 2011-12-26 | Wireless audio and video signal transmission device and television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114338614A (en) * | 2021-12-06 | 2022-04-12 | 广东广播电视台 | Real-time audio and video conversation system capable of switching in real time |
-
2011
- 2011-12-26 CN CN2011205519435U patent/CN202424933U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114338614A (en) * | 2021-12-06 | 2022-04-12 | 广东广播电视台 | Real-time audio and video conversation system capable of switching in real time |
| CN114338614B (en) * | 2021-12-06 | 2024-06-07 | 广东广播电视台 | Audio and video real-time conversation system capable of being switched in real time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 266101 Haier Information Park, 1 Haier Road, hi tech park, Laoshan District, Qingdao, Shandong Patentee after: Qingdao Haier Electric Appliance Co., Ltd. Patentee after: haier group corporation Patentee after: QINGDAO HAIER MULTI-MEDIA CO., LTD. Address before: 266101 Haier Information Park, 1 Haier Road, hi tech park, Laoshan District, Qingdao, Shandong Patentee before: Qingdao Haier Electric Appliance Co., Ltd. Patentee before: haier group corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20201226 |